Sqvealing brakes
Discussion
Hi guys,
Im thinking maybe they just need bleeding but basically my front hope mini's have quite a bit of travel before anything happens, then there's just a shed load of sqvealing and not a lot of stopping. The rear is a deore XT and this is fine besides quite a bit of dead zone, otherwise they bite nicely.
Im thinking maybe they just need bleeding but basically my front hope mini's have quite a bit of travel before anything happens, then there's just a shed load of sqvealing and not a lot of stopping. The rear is a deore XT and this is fine besides quite a bit of dead zone, otherwise they bite nicely.
King of d sofa said:
do you reckon its the same story for the rear or does it just need adjusting?
Some Shimano brakes just feel like that - its dependant on how well they were bled originally and the levers you use - they don't always have the modulation you'd expect.Are they early XT ones i.e. 4 pot?
King of d sofa said:
indeed they are, should they feel like that, do you reckon its better changing them to mono mini's?
Early Shimano XT 4 pot brakes felt a bit wooden (as did many brakes) - and they soon changed to a bigger volume 2 pot caliper. If it works, and you're happy with it, then no point changing.
However if you do change, let me know, I'll have the XT brake off you
- you'll find that LX/XT 2 pot calipers are stupidly cheap to buy if you decide to change...neil_bolton said:
King of d sofa said:
indeed they are, should they feel like that, do you reckon its better changing them to mono mini's?
Early Shimano XT 4 pot brakes felt a bit wooden (as did many brakes) - and they soon changed to a bigger volume 2 pot caliper. If it works, and you're happy with it, then no point changing.
However if you do change, let me know, I'll have the XT brake off you
- you'll find that LX/XT 2 pot calipers are stupidly cheap to buy if you decide to change...Il have to have a good hard think and get one of the tech's at work to have a good look at them
Now i need some help.
Basically I took my bike to work (halfords) and a couple of lads looked it over as we were going to delamere forest a few days later (yesterday) changed pads, cleaned the disc, sanded the disc and it felt a bit better but still not very good.
So we got to delamere yesterday and after about an hour my lever is very very soft and goes all the way back to the handlebars with very very little effect, and the lever even goes in the complete opposite direction I.e the right lever is facing to the left.
Now im thinking maybe a leek somewhere and its contaminating the disc therefore creating the squeal, so what can i do besides bleed the brakes and put fresh fluid in, i obviously need to stop the leak.
Any suggestions would be greatly appreciated.
Basically I took my bike to work (halfords) and a couple of lads looked it over as we were going to delamere forest a few days later (yesterday) changed pads, cleaned the disc, sanded the disc and it felt a bit better but still not very good.
So we got to delamere yesterday and after about an hour my lever is very very soft and goes all the way back to the handlebars with very very little effect, and the lever even goes in the complete opposite direction I.e the right lever is facing to the left.
Now im thinking maybe a leek somewhere and its contaminating the disc therefore creating the squeal, so what can i do besides bleed the brakes and put fresh fluid in, i obviously need to stop the leak.
Any suggestions would be greatly appreciated.
Sometimes just topping up the reservoir with brake fluid can help reduce lever travel. Or wind the lever out using the reach adjuster if there is sufficient scope with your finger reach.
As for squeel using a little copper slip/grease on the backs of the pads can help, as will cleaning the disc with brake cleaner or even white spirit if you don't have any.
If the brake is leaking, check all the points where hoses join caliper or lever are done up tight. If its still leaking, get a seal set from Chain Reaction then bleed them using the hope instructions. It really is very, very, very easy. I'm not super technical and I can do it with my eyes closed.
As for squeel using a little copper slip/grease on the backs of the pads can help, as will cleaning the disc with brake cleaner or even white spirit if you don't have any.
If the brake is leaking, check all the points where hoses join caliper or lever are done up tight. If its still leaking, get a seal set from Chain Reaction then bleed them using the hope instructions. It really is very, very, very easy. I'm not super technical and I can do it with my eyes closed.
Squeal is caused by dirty - not necessarily contanminated - rotors and misaligned callipers.
From what you say they need a thorough servicing. Also, and this might not be the case here, as pads wear the lever 'throw' will grow. Avid's 'Pad Contact Adjuster' is used to correct / accomodate this.
From what you say they need a thorough servicing. Also, and this might not be the case here, as pads wear the lever 'throw' will grow. Avid's 'Pad Contact Adjuster' is used to correct / accomodate this.
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